Poker Strategies - University of California, San Diego

Poker Strategies

Joe PasqualeCSE87: UCSD Freshman Seminar on

The Science of Casino Games: Theory of PokerSpring 2006

References

• Getting Started in Hold’em, E. Miller– excellent beginner book

• Winning Low Limit Hold’em, L. Jones– excellent book for non-beginners

• The Theory of Poker, D. Sklansky– advanced concepts (non-Texas Hold’em specific)

• Illustrated Guide to Texas Hold’em, D. Purdy– good exercises that develop understanding

What to Consider

• Your cards• Your position

– relative to button– relative to other players

• Your investment• Number of players• How your opponents play

Your Cards

• Pocket pairs– Big: A-J; Medium: T-7; Little: 6-2

• Big cards– A-J, suited or unsuited

• Connectors• Suited aces and kings

Pocket Pairs

• Play big pocket pairs aggressively: raise• Play small pocket pairs carefully

– When the pot is big (lots of players)

Big cards

• Play big cards aggressively: raise• Aces >> kings• Suited >> unsuited

Connectors

• Cards that are separated in rank– No-gap, one-gap, two-gap

• For “drawing hands”• Straights, and flushes when suited• Outside vs. inside straights

Suited Aces and Kings

• Aces >> kings• Kings > queens• Kicker is important!

Your Position

• Early position– 3 players left of blinds (+ blinds)

• Middle position– Next 2-3 players

• Late position– Next 2 players (button and cut-off)

Early vs. Late Position

• Early– Little/no information: Play conservatively!– But, play strong hands aggressively

• Late– Lots of information: Can play much looser

Position Relative to Players

• Sit to left of unpredictable players– So you can see what they do– Aggressive players

• Sit to right of predictable players– Count on them doing what you would do– May give you “last action”– Loose-passive players

Your Investment

• The more raises, the stronger yourhand needs to be

• Lots of raising reduces “implied odds”• Consider raises that will come behind

you

Number of Players

• Hands that do well against smallnumber of players, e.g. 2-3– Big pocket pairs, big cards

• Hands that require large number ofplayers– Drawing hands (suited cards)– Small pocket pairs

How Your Opponents Play

• Look for patterns: predictability• “Calling stations”• Loose-passive vs. loose-aggressive• Playing Behind a Raiser

– Jones: “I’m looking for a reason to get outof this hand”

• Raises after you call or raise

Odds and Pot Odds

• Odds: what you expect to win vs. whatyou bet– 4 to 1: you expect to win 4 times your bet

• Pot odds: odds the pot is offering– $30 in pot, your bet is $5: 30 to 5 = 6 to 1

• Pot is offering better odds, take it– $21 in pot, your bet is $7: 21 to 7 = 3 to 1

• Pot is offering worse odds, don’t take it

Some Odds

• 220 to 1: specific pair (e.g., aces)• 16 to 1: any pair• 3.3 to 1: two suited cards• 7.5 to 1: flop a set, given pocket pair• 2.1 to 1: flop A or K, given AK• 4.2 (1.9) to 1: flush given flush draw• 4.9 (2.2) to 1: straight given straight draw

Implied Odds

• Consider– You have a flush draw, one card to come– 4 to 1 underdog to make flush– $16 in pot, your opponent bets $6

• What do you do?

Implied Odds cont’

• Pot odds: 3.7 to 1– $22 in pot, and you are to bet $6– Odds of making flush are 4 to 1: FOLD

• Suppose you are sure your opponentwill call your $6 on river– Pot will then eventually contain $28– Implied odds are 28 to 6 = 4.7 to 1: CALL

Implied Odds cont’

• $22 in pot, you bet $6• On river, you make the flush

– You’re sure additional $6 bet will be called– Yes, you put in an additional $6, but it

doesn’t matter: you will win $28• On river, you don’t make the flush

– You fold: so you lost your $6– Therefore: 28 to 6

Pre-Flop Pot Equity

• How often will your hand win if all cardsare dealt out?

• Assuming you know nothing about youropponents’ cards– n opponents, you hand must have odds

better than n to 1• Big cards, big pocket pairs

Early Position Strategy

• Raise– AA-JJ (reraise)– AKs-AJs (reraise, except AJs)– AKo, AQo

• Call one bet– TT-99, KQs, KJs– ATs, KQo if 3 beyond big blind– If 5+ players, call with any pocket pair

Raising and Calling Pre-Flop

AA KK QQ JJ TT 99AKs AQs AJs ATs A9s A8s

88KQs KJs KTs QJs

AK AQ AJ ATKQ KJ

99 88 77KJsQJs

A9s A6sKTs

AJ KQ AT KJ

66 55 44 33 22A8s A7s

QJs QTs JTsA5s A4s A3s A2s

K9s QTsQ9s JTs J9sT9s T8s 98s 87s

EARLY MIDDLE LATE

RA

ISE

CA

LL

Top 50 of 169 Pocket Hands11-20 21-30 31-40 41-50

1. AA 86% 99 55% JT 40% J9s 28% A7u 10%2. KK 75% KQs 55% QTs 39% 66 26% A8u 10%3. AKs 69% 88 52% KQu 39% A3s 21% A6u 9.9%4. QQ 69% ATs 51% T9s 38% 55 21% 98s 9.8%5. AKu 67% AJu 49% ATu 34% KJu 21% J8s 9.8%6. AQs 65% KJs 45% A7s 34% A2s 20% A4u 9.6%7. JJ 64% QJs 44% A4s 31% K9s 20% K8s 9.5%8. TT 61% A8s 42% A5s 30% Q9s 19% T8s 9.5%9. AQu 64% KTs 41% A6s 30% A9u 17% A5u 9.4%10. AJs 59% A9s 41% 77 39% Qju 17% JTu 9.4%

From The Illustrated Guide to Texas Hold’em, D. Purdy

Post-Flop Strategic Advantages

• Position• Drawing hands

– Suited cards– Connected cards

• “Information advantage”– Given what you have, what do you know

about other hands?– Pocket pairs, drawing a set

Post-Flop Strategies

• Determine pot equity advantage• Bet/raise if you think you have best

hand• The larger the pot, the more risks you

can take• Fold weak hands that miss flop• Save pots, not bets

The Information/Cost Curve

• With each round, information goes up• Cost doubles for turn and river betting• Post-flop bet: max of info/cost curve

Bluffing and Game Theory

• Consider following simple game• You are dealt one card (hidden from

your opponent)• Black wins• Red loses (unless opponent folds)• You can either bet $10 or fold• If you bet, your opponent can call or fold

Decision Tree for Black/Red

Black Red

$10 Fold

$10 Fold

$10 Fold

$10 Fold

You

Opponent

Result 10+P P -P -(10+P) P -P


Black Red

$10 Fold

$10 Fold

$10 Fold

$10 Fold

You

Opponent


If you always play Black and fold Red and youropponent “always” calls, result = 10+P-P = 10


Black Red

$10 Fold

$10 Fold

$10 Fold

$10 Fold

You

Opponent


If you always play Black and fold Red and youropponent is smart (always folds), result = 0


Black Red

$10 Fold

$10 Fold

$10 Fold

$10 Fold

You

Opponent


If If you always bet (Black or Red) and your opponent“always” folds, result = P+P = 2P


Black Red

$10 Fold

$10 Fold

$10 Fold

$10 Fold

You

Opponent


If you always bet (Black or Red) and your opponent issmart (always calls), result = 0


Black Red

$10 Fold

$10 Fold

$10 Fold

$10 Fold

You

Opponent


What if you always play Black, sometimes play Red?

Analysis

• You– Given Black, always bet $10– Given Red, bet $10 with probability x

• Your opponent– Always bet?

• (10+P) - x(10+P) - (1-x)P• 10 + P - x10 - xP - P + xP = (1-x)10 > 0

Analysis


• Your opponent– Always fold?

• P + xP - (1-x)P• P + xP - P + xP = x2P > 0

Opponent’s Best Strategy


• Your opponent– Bet with probability y, fold with prob 1-y

Analysis



• y(10+P) + (1-y)P - xy(10+P) + x(1-y)P - (1-x)P• y10 + yP + P - yP - xy10 - xyP + xP - xyP - P + xP• y10 - xy10 - 2xyP + 2xP = y(10 - 10x - 2xP) + 2xP

Analysis



• y(10 - x(10 + 2P)) + 2xP– Select x = 10/(10 + 2P) = 5/(5 + P)

• Result = 10P/(5+P) ≥ 0, no matter what y is!

Analysis


• Your opponent– For x = 5/(5 + P), you win 10P/(5+P)

• If P = 0, result = 0• If P = 10, result = 6.67• If P = 100, result = 9.52

No Limit Hints (Amarillo Slim)

• Play the players more than the cards• Choose the right opponents• Play tight (few hands) and aggressive• Be observant, watch opponents for tells• Diversify your play• Play slow in fast game, and vice-versa

Finally

• Poker is a game of information– the more you know, and– the less your opponents know– the better you will do

• Knowledge is POWER: Study …– the strategy, the math, your opponents

• Have fun!

Some Exercises

• Adapted from The Illustrated Guide toTexas Hold’em, by Dennis Purdy

Exercise 1: $3 pot

• [$1, $2], YOU, X, X, X, X, X, X, X• Fold, call, or raise?

A♠ A♣

Exercise 1: $3 pot

• [$1, $2], YOU, X, X, X, X, X, X, X• Raise• Strong hand, but many other players• Chase them away• Alternatively: Call to make pot bigger

A♠ A♣

Exercise 2: $7 pot

• [$1, $2], F, $2, F, F, $2, YOU, X, X• Fold, call, or raise?

2♥ 7♣

Exercise 2: $7 pot

• [$1, $2], F, $2, F, F, $2, YOU, X, X• Fold• Weakest possible hand

2♥ 7♣

Exercise 3: $20 pot

• [$1, $2 (you)], $2, $2, $2, $2, $2, $2,$2, $2, $1, YOU

• Fold, check, or raise?

2♥ 7♣

Exercise 3: $20 pot

• [$1, $2 (you)], $2, $2, $2, $2, $2, $2,$2, $2, $1, YOU

• Check• Costs you nothing• Hope for 2-3 7’s, 2-3 2’s, or a 2 and 7

2♥ 7♣

Exercise 4: $3 pot


9♣ T♣

Exercise 4: $3 pot

• [$1, $2], YOU, X, X, X, X, X, X, X• Fold• Too weak for early position

9♣ T♣

Exercise 4: $23 pot

• Say you called• [$1, $2], $2 (you), $4, $6, $8, F, F, F, F,

F, YOU• Do you now call ($8)?• Of course not!

9♣ T♣

Exercise 5: $17 pot

• [$1, $2], $2, $2, $2, $2, $2, $2, $2, YOU• Fold, call, or raise?

9♣ T♣

Exercise 5: $17 pot

• [$1, $2], $2, $2, $2, $2, $2, $2, $2, YOU• Call• You may get T’s or 9’s, or a flush draw,

or a straight draw• Position matters!

9♣ T♣

Exercise 6: $12 pot

• [$1, $2 (you)], F, $2, $2, F, F, $2, $2, F,$1, YOU

• Fold, check, or raise?

J♠ 6♥

Exercise 6: $12 pot

• [$1, $2 (you)], F, $2, $2, F, F, $2, $2, F,$1, YOU

• Check• Poor hand, but costs you nothing• You must hit flop to stay in

J♠ 6♥

Exercise 7: $3 pot


K♠ Q♠

Exercise 7: $3 pot

• [$1, $2], YOU, X, X, X, X, X, X, X• Call• Looks strong, but weak in early position• Even a pair of 2’s beats this hand!

K♠ Q♠

Exercise 8: $3 pot


K♠ J♠

Exercise 8: $3 pot

• [$1, $2], YOU, X, X, X, X, X, X, X• Call• Weakest playable hand in early position

K♠ J♠

Exercise 9: $7 pot

• [$1, $2], $2, $2, YOU, X, X, X, X, X• Fold, call, or raise?

K♠ Q♣

Exercise 9: $7 pot

• [$1, $2], $2, $2, YOU, X, X, X, X, X• Fold• Need to be 3 beyond BB to call this

K♠ Q♣

Exercise 10: $7 pot

• [$1, $2], $2, $2, F, F, F, F, F, YOU• Fold, call, or raise?

5♥ 5♣

Exercise 10: $7 pot

• [$1, $2], $2, $2, F, F, F, F, F, YOU• Call• You are last to act, pocket pair of 5’s• Pay to see the flop

5♥ 5♣

Exercise 10: $11 pot

• After flop: F, C, $2, F, YOU• Fold, call, or raise?

5♥ 5♣ 6♣ Q♥ J♦


• After flop: F, C, $2, F, YOU• Fold• You missed the flop!• Say another player has a 6, Q, or J• You need a 5: 22.5 to 1 (2 out of 47)

5♥ 5♣ 6♣ Q♥ J♦

Exercise 11: $9 pot

• [$1, $2 (you)], F, F, F, F, $4, F, F, F, F,$2 (you)

• Post-flop: Fold, check, or bet?

A♠ 9♠ Q♠ 7♦ K♠

Exercise 11: $9 pot

• [$1, $2 (you)], F, F, F, F, $4, F, F, F, F,$2 (you)

• Bet• If you check, you give opponent control• By betting, you are getting info cheaply

A♠ 9♠ Q♠ 7♦ K♠

Exercise 12: $5 pot

• [$1, $2], $2, YOU, X, X, X, X, X, X• Fold, call, or raise?

Q♠ 2♠

Exercise 12: $5 pot

• [$1, $2], $2, YOU, X, X, X, X, X, X• Fold• Too weak, too many players behind you• What if on flop: A-Q-9, or Q-J-8• What if A or K on turn or river?

Q♠ 2♠


• [$1, $2], $2, $2 (you), F, $2, F, F, $2, F,$1

• Post-flop: $2, $2, $2, YOU, X, X• Fold, call, or raise?

A♣ 4♣ 3♥ K♣ Q♦


• [$1, $2], $2, $2 (you), F, $2, F, F, $2, F,$1

• Post-flop: $2, $2, $2, YOU, X, X• Fold: you missed the flop• You need 2 clubs: what are the odds?

A♣ 4♣ 3♥ K♣ Q♦

Poker Strategies - University of California, San Diego

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